Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc41504fe5031720…

MALICIOUS

PDF

76.5 KB Created: 2021-02-24 01:49:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2893f8a62cb473602667e025d7634004 SHA-1: 5b128bb67512af0ef72bb7af40f4b3a3d82160e8 SHA-256: bc41504fe50317205d9a49bc5b87d203402a90a62b456c079366cc53c8021f4f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that is disguised as a search result for a common item, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/strik?utm_term=spalding+basketball+net+parts PDF link annotation
    • https://tatonipek.weebly.com/uploads/1/3/4/8/134874136/baletebimezeganu.pdfIn PDF document text
    • http://astrology-personal.online/xukilaroe5ey6.pdfIn PDF document text
    • http://idealicait.site/ginerero9hwp2.pdfIn PDF document text
    • http://aycotoro5.xyz/20519639167ck6q7.pdfIn PDF document text
    • http://hdvideo.design/how_to_read_the_nec_code_bookxyp65.pdfIn PDF document text
    • http://xurekovof.22web.org/33318375409.pdfIn PDF document text
    • http://instapriz365.online/77484671403qxa3h.pdfIn PDF document text
    • https://menuwenuxunok.weebly.com/uploads/1/3/4/6/134682317/d56ba6c45.pdfIn PDF document text
    • http://sikutamilom.iblogger.org/19265825492.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/malayalam_album_songs_shafi_kollam_free.pdfIn PDF document text
    • http://dovobol.epizy.com/4601959411.pdfIn PDF document text
    • http://satuvet.epizy.com/esc_ventricular_arrhythmia_guidelines.pdfIn PDF document text
    • http://lexonazez.rf.gd/genkouyoushi_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/bandicam_crack_2017.pdfIn PDF document text
    • http://dujazenemelix.epizy.com/new_malayalam_movie_queen.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/a_good_low_carb_diet_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/wisodijezow.pdfIn PDF document text
    • http://gonoluripep.rf.gd/how_to_setup_a_moultrie_m_series_game_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/havering_sixth_form_teachers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB05 5432 bytes
SHA-256: 7b21277210fb33c6aff358308a5480b1cb8360ae2549c9e73a04ad02e2aad5d5
font_01_sfnt_off0000fd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 11428 bytes
SHA-256: 55a69b68c0fe71633f9a9ef3d0ee887c95e68a6405a0dc56e815c039e71ebe8e

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